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Core java - Interview Questions and Answers for 'Booking.com' - 4 question(s) found - Order By Newest

Very frequently asked. Favorite question in Walk in Drive of many Indian service companies.
  Q1. Difference between TreeMap and HashMap ?Core Java
Anonymous
Ans. They are different the way their elements are stored in memory. TreeMap stores the Keys in order whereas HashMap stores the key value pairs randomly.

  Sample Code for treemap

  Sample Code for hashmap

 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve     java   collections   map   treemap   hashmap     Amber Road  CTS (Cognizant)  ION Trading  DataMetica  Accenture  The Advisory Board Company  BidGely  Infosys  Tata Consultancy (TCS)  HCL Technologies  Wipro  Booking.com  MakeMyTrip  Garena Online  Garmin  ION Trading  Accuity  Palantir Technologies  Books International  Wealthfront  Marin Software  Garmin  IBM  Global Logic  Fiserv  Cumulus Systems  CCTS  UST Global  Cumulus Systems   Apcolite      basic        frequent

Try 1 Question(s) Test


Frequently asked question for intermediate developers.
  Q2. What is Volatile keyword used for ?Core Java
Anonymous
Ans. Volatile is a declaration that a variable can be accessed by multiple threads and hence shouldnt be cached.

  Sample Code for volatile

 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve     java   oops   synchronization   volatile   java keywords     ABC Ltd   Ciena  Xchanging  Square  Infoview Technologies  HCL Technologies  EPAM  GrubHub  TeleMessage  TRUSTe  Informatica  Square  Medidata Solutions  Yellow Pages  eQ Technologic  Sutra Analytics  CustomerXPs  Globant  BB Holdings  Rakuten  Booking.com  BlackRock  Qualcomm  LSI Corporation  ARM Holdings  SpaceX  Toshiba  Peapod  Amadeus  Apptio  Tivo  EchoStar  HomeAway  Syscom Technologies  Aversan  Symantec  Samsung India  Axtria  Qualcomm  CGI Group      intermediate        frequent

Try 1 Question(s) Test


  Q3. Write a Program to check if 2 strings are Anagrams ?Core Java2016-11-30 20:52:37

Ans. public void checkIfAnagram(String str1,String str2){
boolean anagram = true;
for(char c:str1.toCharArray()){
if(!str2.contains(String.valueOf(c))){
System.out.println("Strings are Anagrams");
anagram = false;
}

if(anagram == true){
System.out.println("Strings are not Anagrams");
}
}
}

 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve      check if 2 strings are Anagrams     Amazon  DataMetica  Hewlett Packard (HP)  Opera Solutions  AirWatch  Booking.com  JP Morgan  Verdantis  AppDynamics  QSI Healthcare  Vistaar Technologies  Maventic  5AM Solutions  Rare Mile Technologies  Shutterfly  Fiberlink  Veeva Systems  Flipkart  eHarmony  Splunk  Zoho  Betterment  WisdmLabs  Adap.tv  Spotify  Yahoo  Wissen Infotech  GlobalLogic      basic        frequent


 Q4. Write a method / program that will determine if the parenthesis are balanced in a given string.Core Java2017-02-03 13:13:55

 This question was recently asked at 'Jetbro,Booking.com,Cloudera,UrjaNet,Wissen Infotech,ThoughtWorks,Capital One,Experian,Remaxys,MongoDB,One.com,Lime Brokerage,Netcracker Technology,Ooyala'.This question is still unanswered. Can you please provide an answer.


 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve     string  code  coding     Jetbro  Booking.com  Cloudera  UrjaNet  Wissen Infotech  ThoughtWorks  Capital One  Experian  Remaxys  MongoDB  One.com  Lime Brokerage  Netcracker Technology  Ooyala




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